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20121202
20121210
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. narrator: the lower rates of deforestation are based overnmen ctrcin the environmental laws on the books. brazil has received some help from some new technology and from other ecologists, including chris uhl. uhl is the founder of imazon, a research institute located in the city of belém. the law in pará state says that 50% of all prate land must be maintained in forest. until recently, that was very hd to monitor. now, using a system of satellites casearcher carlos sousaiing cadot that.ps, okgps is realowhat it allows us to do is to pickp signals from the satellites. and through ocess of triangulation we can locate ouels rylynr and through ocess to within about ten meters. four... ey've gour sateites now. we are... probably... in this... area. mm-hmm. narrator: if the government chooses, it can use gps to locate property lines on satlite photographs of the landscape. they can then determine how much of a farmer's land has beenleared but enforcement is stty. anotg problem is thenefficient way the cleared land is being used. the most common farming and grazing method here requires the
Search Results 0 to 0 of about 1